O-ring

noun

A circular gasket, usually made of rubber.

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Meanings

nounO-ring (plural O-rings)

plural O-rings

  1. A circular gasket, usually made of rubber.

    The O-rings of the Solid Rocket Boosters were not designed to erode.

    1986 June 6, Richard Feynman, “Personal observations on the reliability of the Shuttle”, in Presidential Commission on the Space Shuttle Challenger Accident, Report to the President
  2. fashionA small metal ring used to connect two straps.

Origin

From O + ring.

Full word history & related roots →

Translations

Bulgarian О-пръ́стен
  • О-пръ́стен (O-prắsten)circular gasket
Chinese Mandarin o型環 /o型环
  • o型環 /o型环 (ōuxínghuán)circular gasket
Finnish o-rengas
  • o-rengascircular gasket
French joint torique
  • joint toriquecircular gasket
German O-Ring
  • O-Ringcircular gasket
Polish O-ring
  • O-ringcircular gasket
Russian О-ринг
  • О-ринг (O-ring)circular gasket
Spanish junta/empaquetadura tórica, retén tórico
  • junta/empaquetadura tóricacircular gasket
  • retén tóricocircular gasket
Turkish o-halka
  • o-halkacircular gasket
Cite this entry
APA

O-ring. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/O-ring

MLA

“O-ring.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/O-ring. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “O-ring,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/O-ring.

Source: O-ring on Wiktionary, CC BY-SA 4.0.